Belt-shifter.



J. s. ELLIOTT.

BELT SHIFTEB. APPLICATION FILED SEPT. 13, 1909,

. Patented Dec.28,1909.

JOHN s. ELLrorr, or MOHALL, NORTH DAKOTA.

IBELT SI-IIFTER.

T all whom "it may concern:

Be it known that 1, JOHN S. ELLIOTT, a citizen of the United States,residing at Mohall, in the county of Ward and State of North Dakota,have invented a new and useful Belt-Shifter, of which the following is aspecification.

The belt shifter which is the subject of the present invention isdesigned more particularly for use on traction engines to throw the beltofi the drive pulley when it is desired to stop the machinery driven bysaid engme.

It is the object of the invention to provide a belt shifter of the kindstated which is simple in structure and quick and reliable in action,and also one which can be readily applied to any ordinary tractionengine without modifying the structure thereof.

lVith the herein stated objects in view, the invention consists in anovel. construction and arrangement of parts to be hereinafter describedand claimed, reference being had to the drawing hereto annexed in which;

Figure 1 is a plan view of the device; Fig. 2 is a side elevation; Fig.3 is a front elevation.

Referring to the drawings, 5 denotes the boiler of the traction engineto which the invention is applied. On one side of the boiler is mounteda bracket consisting of two straps 6 and 7 respectively, which arerigidly secured together. The strap 6 is bolted, riveted or otherwisesecured to the boiler, and shaped to conform to the curvature of itsouter surface. At the upper and lower ends of the strap 7 areoutstanding flanges 8 to which are pivotally connected arms 9 whichconverge outwardly and are connected at their outer ends to form apivotal support for a pair of arms carrying a roller 10. These arms arein two sections indicated at 11 and 12 respectively which are adjustablyconnected by means of bolts 13 passing through holes 14 in theoverlapping ends of the sections. A number of holes are provided inorder that the sections may be ad justably connected to lengthen orshorten the arms. The sections 12 are vertically spaced at their outerends and carry at said ends the spindle 15 on which the roller 10 ismounted. The roller is vertically disosed, and in shape it increases indiameter "mm its middle toward its ends.

The inner ends of the sections 12 of the roller supporting arms arebrought together Specification of Letters Patent.

Application filed September 13, 1909.

Patented Dec. 28 1909.

Serial No. 517,401.

and connected to a rod 16, mounted in guide openings 17 made in theoutstanding flanges 18 of a plate 19 secured to the strap 7. This rod ishorizontally presented and is adapted to be advanced or retracted toswing the roller supporting arms on their pivot. The rods are connectedto 'a suitable hand lever 20 mounted on the engine within convenientreach of the engineer.

The herein described mechanism is so mounted on the boiler, that theroller 10 may come in contact with the edge of the belt. Upon advancingthe rod 16 the roller supporting arms, as well as the arms 9, swing inthe direction of the boiler, and when the rod is retracted, said armsswing outwardly from the boiler. The arms 9 swing in the same plane asthe roller sup )orting arms, which is horizontal, and they serve to pushsaid roller supporting arms outwardly when the belt is to be thrown offthe pulley which gives the roller a greater range of travel and assuresthe throwing off of the belt. The outward movement of the roller islimited by the engagement of the sections 12 with one of the flanges 18.

hen the device is not in use, the roller su) orting arms, and the arms 9may be fol ed to extend close to the boiler. will usually be in thisposition when the engine is traveling, so as to be out of the way. Whenthe engine is connected up to the machinery to be driven, the parts willbe adjusted so that the roller 10 extends close to the edge of the belt.Upon swing ing the hand lever 20 in the proper direction, the roller isthrust outwardly from the boiler and throws the belt off the pulley.

Having thus described my said invention,

what I claim as new and desire to secure by United States Letters Patentis:

1. In a belt shifter, a support, arms pivotally mounted thereon, aroller, supporting arms carrying said roller, said supporting arms beingpivotally connected to said first mentioned arms, and moving in the sameplane, and an operating device connected to the supporting arms.

2. In a belt shifter, a support, arms pivotally mounted thereon, beltengaging means, supporting arms carrying said belt engaging means, saidsupporting arms being pivotally connected to the first mentioned arms,and swinging in the same plane, and an operating device connected to thesupporting arms.

3, In a belt shifter, a bracket having They supporting arms carryingsaid belt engaging means, said arms comprising adjustable sections, andbeing pivotally connected to the first mentioned arms, and swinging inthe same plane, and an operating device connected to the supportingarms.

In testimony that I claim the foregoing as my own, I have hereto afiixedmy signature in the presence of tWo Witnesses.

JOHN S. ELLIOTT.

Witnesses IV. H. BELIDEAU, CONRAD IVERSON.

